:root {
  --bg: #f4f5f7;
  --card-bg: #ffffff;
  --text: #1a1d23;
  --muted: #6b7280;
  --border: #e2e5ea;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --danger: #dc2626;
  --danger-text: #ffffff;
  --in-bg: #dcfce7;
  --in-text: #166534;
  --out-bg: #fee2e2;
  --out-text: #991b1b;
  --low-bg: #fef3c7;
  --low-text: #92400e;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14161a;
    --card-bg: #1e2126;
    --text: #e6e8eb;
    --muted: #9aa1ab;
    --border: #2b2f36;
    --accent: #3b82f6;
    --accent-text: #ffffff;
    --danger: #ef4444;
    --danger-text: #ffffff;
    --in-bg: #123521;
    --in-text: #4ade80;
    --out-bg: #3a1414;
    --out-text: #f87171;
    --low-bg: #3a2c0a;
    --low-text: #fbbf24;
    --shadow: 0 1px 3px rgba(0,0,0,0.4);
  }
}

:root[data-theme="dark"] {
  --bg: #14161a;
  --card-bg: #1e2126;
  --text: #e6e8eb;
  --muted: #9aa1ab;
  --border: #2b2f36;
  --accent: #3b82f6;
  --accent-text: #ffffff;
  --danger: #ef4444;
  --danger-text: #ffffff;
  --in-bg: #123521;
  --in-text: #4ade80;
  --out-bg: #3a1414;
  --out-text: #f87171;
  --low-bg: #3a2c0a;
  --low-text: #fbbf24;
  --shadow: 0 1px 3px rgba(0,0,0,0.4);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  padding-bottom: 2rem;
}

img { max-width: 100%; }
[hidden] { display: none !important; }

.topbar {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 10;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.topbar h1 {
  font-size: 1.1rem;
  margin: 0;
}

.topbar-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.warehouse-select {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border-radius: 999px;
  color: var(--text);
  flex-shrink: 0;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.user-badge button {
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
}

.auth-gate {
  display: flex;
  justify-content: center;
  padding: 3rem 1rem;
}

.auth-box {
  max-width: 360px;
  width: 100%;
}

.auth-box h2 {
  margin-top: 0;
}

select, input, textarea, button {
  font-family: inherit;
  font-size: 0.95rem;
}

select, input[type="text"], input[type="number"], input[type="date"], input[type="search"], textarea {
  background: var(--card-bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.6rem;
}

main {
  max-width: none;
  margin: 0;
  padding: 1rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: var(--shadow);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
  flex: 1;
}

.field label {
  font-weight: 600;
  color: var(--muted);
  font-size: 0.85rem;
}

.field-row {
  display: flex;
  gap: 0.75rem;
}

.field-row .field { margin-bottom: 0.75rem; }

textarea { resize: vertical; }

.form-actions {
  display: flex;
  gap: 0.5rem;
}

button {
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
}

button.primary {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
  font-weight: 600;
}

button.danger {
  background: var(--danger);
  color: var(--danger-text);
  border-color: var(--danger);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.section-header h2 {
  font-size: 1rem;
  margin: 0;
}

.threshold-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.threshold-control input {
  width: 5rem;
}

.search-input {
  width: 100%;
  margin-bottom: 0.75rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.scrollable-list {
  max-height: 420px;
  overflow-y: auto;
}

.scrollable-list thead th {
  position: sticky;
  top: 0;
  background: var(--card-bg);
  z-index: 2;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 480px;
}

th, td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; }

tbody tr:last-child td { border-bottom: none; }

td.remarks-cell, th.remarks-col {
  white-space: normal;
  min-width: 120px;
}

/* Item names can be long (brand + full description) — wrap instead of
   truncating so the complete name is always visible. */
td.item-col, th.item-col {
  white-space: normal;
  min-width: 220px;
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}

.badge-in { background: var(--in-bg); color: var(--in-text); }
.badge-out { background: var(--out-bg); color: var(--out-text); }
.badge-low { background: var(--low-bg); color: var(--low-text); margin-left: 0.4rem; }
.badge-pending { background: var(--low-bg); color: var(--low-text); }
.badge-confirmed { background: var(--in-bg); color: var(--in-text); }
.badge-returned { background: var(--out-bg); color: var(--out-text); }

tr.low-stock-row td:first-child {
  border-left: 3px solid var(--low-text);
}

.empty-row td {
  color: var(--muted);
  text-align: center;
  padding: 1.25rem 0.6rem;
  white-space: normal;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal-box {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.25rem;
  max-width: 360px;
  width: 100%;
  box-shadow: var(--shadow);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
}

.toast {
  position: fixed;
  bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  z-index: 200;
  box-shadow: var(--shadow);
  max-width: 90vw;
}

@media (max-width: 480px) {
  .field-row { flex-direction: column; gap: 0; }
  main { padding: 0.6rem; }
}

.hint-text {
  color: var(--muted);
  font-size: 0.85rem;
  margin: -0.25rem 0 0.75rem;
}

button.secondary {
  background: var(--bg);
}

.transfer-items-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.transfer-item-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr auto;
  gap: 0.5rem;
  align-items: end;
}

.transfer-item-row .field {
  margin-bottom: 0;
}

.transfer-item-row .remove-item-btn {
  padding: 0.5rem 0.6rem;
  color: var(--danger);
  border-color: var(--danger);
}

@media (max-width: 560px) {
  .transfer-item-row {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "item item"
      "qty unit"
      "remove remove";
  }
  .transfer-item-row .item-field { grid-area: item; }
  .transfer-item-row .qty-field { grid-area: qty; }
  .transfer-item-row .unit-field { grid-area: unit; }
  .transfer-item-row .remove-item-btn { grid-area: remove; width: 100%; }
}

.transfer-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.transfer-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem;
}

.transfer-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.transfer-card-header .route {
  font-weight: 700;
}

.transfer-card-meta {
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}

.transfer-items-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 0.5rem;
}

.transfer-items-table th, .transfer-items-table td {
  text-align: left;
  padding: 0.3rem 0.4rem;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
}

.transfer-card-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.return-reason {
  font-size: 0.8rem;
  color: var(--out-text);
  margin-top: 0.4rem;
}

.modal-box-wide {
  max-width: 560px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.modal-header h3 {
  margin: 0;
  font-size: 1rem;
}

.icon-btn {
  border: none;
  background: none;
  color: var(--muted);
  font-size: 1.1rem;
  padding: 0.2rem 0.4rem;
}

.batch-add-rows {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 50vh;
  overflow-y: auto;
  margin-bottom: 0.5rem;
}

.batch-add-row {
  display: grid;
  grid-template-columns: 2fr 1fr auto;
  gap: 0.5rem;
}

#stockCheckTable {
  table-layout: fixed;
  min-width: 640px;
}

#stockCheckTable td, #stockCheckTable th {
  vertical-align: middle;
}

#stockCheckTable th:nth-child(1), #stockCheckTable td:nth-child(1) { width: 44%; }
#stockCheckTable th:nth-child(2), #stockCheckTable td:nth-child(2) { width: 10%; }
#stockCheckTable th:nth-child(3), #stockCheckTable td:nth-child(3) { width: 12%; }
#stockCheckTable th:nth-child(4), #stockCheckTable td:nth-child(4) { width: 14%; }
#stockCheckTable th:nth-child(5), #stockCheckTable td:nth-child(5) { width: 10%; }
#stockCheckTable th:nth-child(6), #stockCheckTable td:nth-child(6) { width: 10%; }

#stockCheckTable input {
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.diff-positive { color: var(--in-text); font-weight: 700; }
.diff-negative { color: var(--out-text); font-weight: 700; }
.diff-zero { color: var(--muted); }

.remove-row-btn {
  padding: 0.3rem 0.5rem;
  color: var(--danger);
  border-color: var(--danger);
}

.action-cell {
  display: flex;
  gap: 0.4rem;
  white-space: nowrap;
}

.action-cell button {
  padding: 0.35rem 0.5rem;
  font-size: 0.8rem;
}

.autocomplete-dropdown {
  position: fixed;
  z-index: 300;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  max-height: 260px;
  overflow-y: auto;
}

.autocomplete-option {
  padding: 0.5rem 0.6rem;
  cursor: pointer;
  white-space: normal;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.autocomplete-option:last-child {
  border-bottom: none;
}

.autocomplete-option:hover,
.autocomplete-option.active {
  background: var(--bg);
}